Seiko Cal. 5637 - 339

The Seiko 5637-339 represents an important milestone in Seiko's 1975 lineup. Powered by the 5637 caliber with 36j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-4a1b30c725b7]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Burgundy

Jewels

36j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1975

Related Models

• Seiko 6322-186
• Seiko 6625-895
• Seiko 3852-460
• Seiko 6243-569
• Seiko 6349-332
• Seiko 4541-139
• Seiko 6632-916
• Seiko 4593-617
• Seiko 7163-695
• Seiko 5286-532
• Seiko 7182-630
• Seiko 4585-838